Published in 2000, the 128 page The Penguin Atlas of Human Sexual Behavior contains a plethora of facts and data about sex and sexuality worldwide. Unfortunately, the data used in the atlas was not often available for each country in the world so the author, Dr. Judith Mackay, was left to map incomplete data which is sometimes from as few as a dozen or so counties. Nonetheless, the book provides a fascinating insight into the cultural geography of sex and reproduction.